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Remove the ambiguity from the PostScript number regex

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`\d+\.?\d*` can split a run of digits in as many ways as it is long, so
it would backtrack polynomially if anything following it could reject.
The optional exponent can't, hence no bug today, but `\d+(?:\.\d*)?`
accepts the same numbers unambiguously.
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calixteman 2026-08-04 18:43:58 +02:00
parent e57a46436f
commit 16f5691df7
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1 changed files with 1 additions and 1 deletions
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src/core/postscript/lexer.js
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@ -132,7 +132,7 @@ class Lexer {
this.pos = 0; this.pos = 0;
this.len = data.length; this.len = data.length;
// Sticky regexes: set lastIndex before exec() to match at an exact offset. // Sticky regexes: set lastIndex before exec() to match at an exact offset.
this._numberPattern = /[+-]?(?:\d+\.?\d*|\.\d+)(?:e[+-]?\d+)?/iy; this._numberPattern = /[+-]?(?:\d+(?:\.\d*)?|\.\d+)(?:e[+-]?\d+)?/iy;
this._identifierPattern = /[a-z]+/y; this._identifierPattern = /[a-z]+/y;
} }